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PostPosted: Tue Jun 30, 2009 2:12 am 
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As a new DSLR user, and Olympus owner, I'm confused by the C-AF+MF mode.

The manual says you adjust the focus manually THEN go to Continuous AF. Would the move to C-AF not destroy your carefully adjusted manual focus?

How does one take best advantage of this mode?

Regards,

Terry

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PostPosted: Tue Jun 30, 2009 3:13 am 
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Let's say you're using C-AF to track a bird, and the bird suddenly goes stationary. Well, sometimes, the quickets thing to do is using manual focus to nail the bird, instead of having to change from all AF points to single point.

That's me, anyhow.

I also remember reading of a guy who used an E-3 and a 50-200 SWD to shoot some American Football. Well, he tracked and he tracked during the past time, but then out of nowhere some people let out a bunch of balloons, and the AF just wouldn't understand that this VERY big punch of bright colored things weren't the motive. So he took his finger of the AEL/AFL button and focused manually, and nailed it.

:)

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PostPosted: Tue Jun 30, 2009 3:42 am 
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Thanks, nomix, those examples make sense to me because the MF adjustments come AFTER the C-AF is activated, and while you're pressing the shutter button halfway (or the AEL/AFL button). What got me confused was the (E-620) manual, which seems to imply, on p. 57, that you use MF first:
Quote:
Focus with the focus ring and press the shutter button halfway to activate C-AF mode.
    * While the shutter button is kept pressed, MF cannot be used
    * When the shutter button is not pressed, focusing with MF is possible
Notes
If the shutter button is pressed again after fine-adjusting the focus with the focus ring, the AF is activated and your adjustments are cancelled.


Any thoughts on these instructions?

Cheers!

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PostPosted: Tue Jun 30, 2009 4:57 am 
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It can also be used to give the camera a better starting point to start focusing from. If for instance you are using a telephoto such as the 70-300, and your lens is zoomed out to infinity but you want to shoot something that is only a couple meters away, if you manually focus the lens to approximately where you want it, the lens will have a much easier time finding focus.

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